ASA 11/02/2025 – Appointment of a service provider to provide material expert services – 1992/219 (Reappraisal 1997): Derbigum SP Waterproofing, 2018/574 Polyglass Spider P & Spider P Mineral Waterproofing Membrane, 2017/557: Polyglass Evolight S & Evolight S Mineral Waterproofing Membranes and 2014/464: Optiflash Waterproofing System.

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